When I tried to use
tvservice - o to turn off my screen which worked but when I used
tvservice -p to turn back on it didn't work. Is there any way to change the time it takes to turn off the screen? The display is hdmi.
You can go into your screensaver settings and change the time it kicks in.
Although it you might be able to bring it back with a commandline of :
xset dpms force on